The project is powered by an Arduino nano which resides in the core of the ball. [David] used protoboard sourced locally for each of the slices, soldering green LEDs along the curved edges, and added shift registers to drive them. The ball is driven by a LiPo battery which can power it for about 45 minutes. You can see the animation designs he coded in the clip after the break.

til recently i wondered what a hand made version would look like, if i had the funds, i would make one too, and apparently it looks great! i was worried something as complex mechanically
(boards attached at weird angles and weight on it)
would fail to look anything like other then a mess.

… if you didnt mind using them with patternes/graphics that use a minimal amount of on-leds per frame
(umm, 3d sphere video isnt reallly available for download rofl)
then the battery would last longer.

then do soemthing with multiple balls having multiple colors. AND SYNCED XD